Archipelago » qemu

/*

 * QEMU PIIX4 PCI Bridge Emulation

 *

 * Copyright (c) 2006 Fabrice Bellard

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "hw/hw.h"

#include "hw/i386/pc.h"

#include "hw/pci/pci.h"

#include "hw/isa/isa.h"

#include "hw/sysbus.h"

PCIDevice *piix4_dev;

typedef struct PIIX4State {

    PCIDevice dev;

} PIIX4State;

static void piix4_reset(void *opaque)

{

    PIIX4State *d = opaque;

    uint8_t *pci_conf = d->dev.config;

    pci_conf[0x04] = 0x07; // master, memory and I/O

    pci_conf[0x05] = 0x00;

    pci_conf[0x06] = 0x00;

    pci_conf[0x07] = 0x02; // PCI_status_devsel_medium

    pci_conf[0x4c] = 0x4d;

    pci_conf[0x4e] = 0x03;

    pci_conf[0x4f] = 0x00;

    pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10

    pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10

    pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11

    pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11

    pci_conf[0x69] = 0x02;

    pci_conf[0x70] = 0x80;

    pci_conf[0x76] = 0x0c;

    pci_conf[0x77] = 0x0c;

    pci_conf[0x78] = 0x02;

    pci_conf[0x79] = 0x00;

    pci_conf[0x80] = 0x00;

    pci_conf[0x82] = 0x00;

    pci_conf[0xa0] = 0x08;

    pci_conf[0xa2] = 0x00;

    pci_conf[0xa3] = 0x00;

    pci_conf[0xa4] = 0x00;

    pci_conf[0xa5] = 0x00;

    pci_conf[0xa6] = 0x00;

    pci_conf[0xa7] = 0x00;

    pci_conf[0xa8] = 0x0f;

    pci_conf[0xaa] = 0x00;

    pci_conf[0xab] = 0x00;

    pci_conf[0xac] = 0x00;

    pci_conf[0xae] = 0x00;

}

static const VMStateDescription vmstate_piix4 = {

    .name = "PIIX4",

    .version_id = 2,

    .minimum_version_id = 2,

    .minimum_version_id_old = 2,

    .fields      = (VMStateField[]) {

        VMSTATE_PCI_DEVICE(dev, PIIX4State),

        VMSTATE_END_OF_LIST()

    }

};

static int piix4_initfn(PCIDevice *dev)

{

    PIIX4State *d = DO_UPCAST(PIIX4State, dev, dev);

    isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));

    piix4_dev = &d->dev;

    qemu_register_reset(piix4_reset, d);

    return 0;

}

int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn)

{

    PCIDevice *d;

    d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");

    *isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));

    return d->devfn;

}

static void piix4_class_init(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

    k->no_hotplug = 1;

    k->init = piix4_initfn;

    k->vendor_id = PCI_VENDOR_ID_INTEL;

    k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0;

    k->class_id = PCI_CLASS_BRIDGE_ISA;

    dc->desc = "ISA bridge";

    dc->no_user = 1;

    dc->vmsd = &vmstate_piix4;

}

static const TypeInfo piix4_info = {

    .name          = "PIIX4",

    .parent        = TYPE_PCI_DEVICE,

    .instance_size = sizeof(PIIX4State),

    .class_init    = piix4_class_init,

};

static void piix4_register_types(void)

{

    type_register_static(&piix4_info);

}

type_init(piix4_register_types)